A frequent theme is the exploration of the wizarding world's social hierarchy. As a lord, Harry is thrust into a different social stratum. He has to navigate the politics, alliances, and rivalries among the noble families. This often involves dealing with ancient family feuds and forging new relationships. It also includes themes of legacy, as Harry discovers what it means to carry on a family name in a more formal, lordly way.
Power is a common theme. Harry being 'Lord Potter' usually means he has more power, and the fanfic may explore how he uses or misuses it.
A common theme is the origin of the new Dark Lord. It's often related to the remnants of Voldemort's ideology or the power vacuum he left behind. For example, in some fanfics, a disgruntled former Death Eater's child rises as the new Dark Lord, seeking to complete what Voldemort started.
A common theme is redemption. Often, through time travel, either Harry or Lord Black has the chance to correct past mistakes or make amends for things that went wrong in their original timelines. For example, they might be able to save a life that was lost previously.
One common theme is friendship. Harry Lord often forms strong bonds with other characters in fanfiction, just like in the original stories. Another theme is adventure, as he embarks on various quests.
Well, in these fanfics, a common theme is the struggle against the odds. Harry might face challenges like lack of proper tools or difficult customers, but he overcomes them. Also, the theme of growth is present. He starts as a novice perhaps and grows into a skilled mechanic. And sometimes, there's a bit of a mystery involved, like when he has to figure out what's wrong with a particularly tricky car.
One common theme is power and privilege. When Harry is nobility, he often has to navigate the power dynamics within the wizarding world's noble families. Another theme is identity. Harry has to figure out how his new noble identity fits in with his existing self - the boy who grew up with the Dursleys.
One common theme is acceptance. In many of these fanfics, Harry's friends learn to accept his autistic traits. Another theme is struggle, as Harry has to deal with the wizarding world which may not always be accommodating to his needs.
One common theme could be how Harry's German heritage affects his relationship with other characters. For instance, it might change the dynamic with Hermione and Ron as they come from different cultural backgrounds.
Common themes often include power dynamics. Since Harry is a demon, he may have new and different powers. Fanfics might explore how he uses or controls these powers, and how they affect his relationships with others like Hermione and Ron. Also, the theme of redemption can be present. Even as a demon, Harry may strive to do good, and the story could be about his journey towards redemption.
One common theme is the power aspect. Since both Harry and Merlin are powerful in their own rights, fanfics often explore how their combined powers would change things. For example, they might be able to defeat dark forces more easily.